(5R,8S,11R,13S,14S,17S)-11-(4-aminophenyl)-5,17-dihydroxy-13-methyl-17-(prop-1-yn-1-yl)-4,5,6,7,8,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one